Re: [PATCH v5 6/6] VT-d: support the device IOTLB

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David Woodhouse wrote:
On Mon, 2009-05-18 at 13:51 +0800, Yu Zhao wrote:
@@ -965,6 +1037,8 @@ static void iommu_flush_iotlb_psi(struct intel_iommu *iommu, u16 did,
        else
                iommu->flush.flush_iotlb(iommu, did, addr, mask,
                                                DMA_TLB_PSI_FLUSH);
+       if (did)
+               iommu_flush_dev_iotlb(iommu->domains[did], addr, mask);
 }
static void iommu_disable_protect_mem_regions(struct intel_iommu *iommu)

Hm, why 'if (did)' ?
Domain ID zero is only special in caching mode. Should it be:
	if (!cap_caching_mode(iommu->cap) || did)
?

Yes, you are right. Domain ID 0 is only reserved for caching mode. Will send a fix for this.

Thanks!
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